<template>
  <div class="article">
    <el-card>
      <template #header>
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="'/home'">首页</el-breadcrumb-item>
          <el-breadcrumb-item>内容管理</el-breadcrumb-item>
        </el-breadcrumb>
      </template>
      <el-form label-width="100px">
        <el-form-item label="状态">
          <!-- 单选框组件 -->
          <el-radio-group v-model="form.status">
            <el-radio :label="null">全部</el-radio>
            <el-radio :label="0">草稿</el-radio>
            <el-radio :label="1">待审核</el-radio>
            <el-radio :label="2">审核通过</el-radio>
            <el-radio :label="3">审核失败</el-radio>
            <el-radio :label="4">已删除</el-radio>
          </el-radio-group>
        </el-form-item>
        <!-- 频道
        1：定义api
        2：导入api
        3:进入页面就请求获取列表数据
        4：存储并渲染
         -->
        <el-form-item label="频道">
          <!-- <h3>{{ channelsList }}</h3> -->
          <el-select placeholder="请选择" v-model="form.channel_id">
            <el-option
              v-for="item in channelsList"
              :key="item.id"
              :label="item.name"
              :value="item.id"
            ></el-option>
          </el-select>
        </el-form-item>
        <!-- 日期 -->
        <el-form-item label="日期">
          <!-- <h3>{{ form.picker }}</h3>
          <h3>{{ form.begin_pubdate }}</h3>
          <h3>{{ form.end_pubdate }}</h3> -->
          <!-- @change="pickerChange" -->
          <el-date-picker
            v-model="form.picker"
            type="daterange"
            range-separator="至"
            start-placeholder="开始日期"
            end-placeholder="结束日期"
          >
          </el-date-picker>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="submit">筛选</el-button>
        </el-form-item>
      </el-form>
    </el-card>
    <!-- 列表 -->
    <el-card>
      <template #header> 根据筛选条件共查询到 {{ total }} 条结果 </template>
      <el-table :data="list">
        <el-table-column label="封面">
          <template v-slot="scope">
            <img class="cover" :src="scope.row.cover.images[0]" alt="" />
          </template>
        </el-table-column>
        <el-table-column label="标题" prop="title"></el-table-column>
        <el-table-column label="状态" prop="status">
          <template v-slot="scope">
            {{ scope.row.status === 2 ? '审核通过' : '审核不通过' }}
          </template>
        </el-table-column>
        <el-table-column label="发布时间" width="320">
          <template v-slot="{ row }">
            {{ row.pubdate }}
          </template>
        </el-table-column>
        <el-table-column label="阅读数" prop="read_count"></el-table-column>
        <el-table-column label="评论数" prop="comment_count"></el-table-column>

        <el-table-column label="1" prop="read_count"></el-table-column>
        <el-table-column label="2" prop="comment_count"></el-table-column>

        <el-table-column label="点赞数" prop="like_count"></el-table-column>
        <el-table-column label="操作" width="300">
          <template v-slot="scope">
            <div>
              <h3>{{ scope.$index }}</h3>
              <el-button>编辑</el-button>
              <el-button @click="del"> 删除</el-button>
            </div>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <!-- 分页组件
      el-pagination
          total:总条数
          page-size:页容量
          page-sizes:页容量选项
          current-page:默认页码
          layout="通过参数配制需要的功能 total,sizes,prev,pager,next,jumper"
          @current-change:页码修改后触发function(page){page:当前页码}
          @size-change="页容量修改后触发function(size){size:当前页容量}"
    -->
      <el-pagination
        :total="total"
        :page-size="form.per_page"
        :page-sizes="[1, 20, 30, 40]"
        :current-page="form.page"
        layout="total,sizes,prev,pager,next,jumper"
        @corrent-change="pageChange"
        @size-change="sizeChange"
      >
      </el-pagination>
    </el-card>
  </div>
</template>
<script>
import { channels, mpArticles } from '@/api/index.js'
export default {
  data () {
    return {
      form: {
        picker: [], // [起始时间,结束时间],
        status: null, //	否		文章状态，0-草稿，1-待审核，2-审核通过，3-审核失败，不传为全部
        channel_id: '', //	是		不传为全部
        begin_pubdate: '', //	否		起始时间
        end_pubdate: '', //	否		截止时间
        page: 1, //	否		页码 默认为1页
        per_page: 10 //	否		每页数量 不传为默认10
      },
      channelsList: [], // 频道列表
      list: [], // 文章列表
      total: 0 //总条数
    }
  },
  watch: {
    // 默认只能监听栈的变化，如果堆与栈都想监听deep:true
    // 将日期选择改变时触发
    'form.picker': {
      handler (newVal, oldVal) {
        console.log('值改变了', newVal)
        if (newVal.length === 2) {
          this.form.begin_pubdate = newVal[0]
          this.form.end_pubdate = newVal[1]
        }
      },
      deep: true
    }
  },
  //
  async beforeCreate () {
    // this.$nextTick(()=>{
    //   nextTick:它前面的数据都渲染完成后执行
    // })
    // 1:有时候我们进入页面请求写到methods方法的  2:它还不能获取data属性，如果需要调用接口使用data属性作为参数就不适合了
  },
  async created () {
    const res = await channels() // axios请求  异步  ajax请求  promise.then 微任务
    this.channelsList = res.data.channels
    console.log('频道:', res)
  },
  methods: {
    // 将日期选择改变时触发
    pickerChange (value) {
      if (value.length === 2) {
        this.form.begin_pubdate = value[0]
        this.form.end_pubdate = value[1]
      }
      console.log(value)
    },
    // 获取文章列表
    /*
    1:定义api
    2:导入api
    3:点击筛选时调用api
    4:获取数据并存储渲染
    
    */

    async getDate () {
      const res = await mpArticles(this.form)
      this.list = res.data.results
      this.total = res.data.total_count
      console.log('文章列表:', res)
    },
    async submit () {
      this.form.page = 1
      this.getDate()
    },
    // 页码修改
    pageChange (page) {
      this.form.page = page
      this.getData()
    },
    // 页容量改变
    sizeChange (size) {
      this.form.per_page = size
      this.getData()
    },
    // 删除
    del () {
      this.$confirm('确定删除吗', '提示', {
        type: 'warning',
        confirmButtonText: '删除',
        cancelButtonText: '取消'
      })
        .then(() => {
          console.log('确定')
        })
        .catch(() => {
          console.log('取消')
        })
    }
  }
}
</script>
<style lang="less" scoped>
.cover {
  width: 50px;
}
</style>
